Icom IC-28H Instruction Manual page 21

2) Push and hold WRITE SWITCH.
"M" disappears
5-3 SCAN FUNCTIONS
Ш FREQUENCY SCANNING
1) Select VFO mode.
2) Push and hold UP SWITCH or DN
SWITCH to start scan.
NOTE: The microphone SCAN
SWITCH must be ON.
3) Push UP SWITCH or DN SWITCH
to cancel scan.
Ш MEMORY CHANNEL
SCANNING
1) Select MEMORY mode.
2
—
Push UP or DN SWITCH to start
and stop scan.
2) Push and hold the WRITE SWITCH for about 1/2 second.
e The 3 short tones indicate that the information contained in the
memory channel has been transferred to the VFO. Do not
release the WRITE SWITCH until the 3 tones are heard.
e After the transfer is completed, the 1С-28Н changes to the VFO
mode and the MEMORY mode "M" disappears from the dis-
play.
e This transfer function does not affect the contents of the me-
mory channel.
Both frequency and memory scanning on the 1С-28Н are controlled
from the microphone. Before attempting to use either scan function,
set the SOL/CHK CONTROL as below:
eSOL/CHK CONTROL : Speaker noise quieted
e T/R INDICATOR : OFF
When using the frequency scan, the entire frequency range is auto-
matically searched by the 1С-28Н using the programmed size of
frequency steps (SECTION 5- 1 SELECTING A FREQUENCY ).
The receiver only stops on frequencies where a signal is present.
1) Push the VFO side of the VFO/MR SWITCH.
2) Push and hold the UP SWITCH or DN SWITCH on the micro-
phone for about 1/2 second.
e The decimal point on the display begins to blink indicating the
scan has started.
e The receiver scans in ascending order if the UP SWITCH is
pushed, or in descending order if the DN SWITCH is pushed.
The frequency on the display changes to indicate each fre-
quency checked as the scan progresses.
e When a signal opens the receiver squelch circuit (i.e. the green
T/R INDICATOR lights), the scan stops and the receiver moni-
tors the signal. The scan begins again about 3 seconds after the
frequency is clear of the signal, or about 15 seconds after the
scan stops.
3) Push either the UP SWITCH or DN SWITCH on the microphone
in order to cancel the scan function.
The memory channel scan is similar to the frequency scan except
that all of the memory channels are checked repeatedly for signals.
1) Push the MR side of the VFO/MR SWITCH.
2) Follow steps 2) and 3) for FREQUENCY SCANNING.
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